1223410340 has 12 divisors (see below), whose sum is σ = 2569161756. Its totient is φ = 489364128.

The previous prime is 1223410339. The next prime is 1223410343. The reversal of 1223410340 is 430143221.

It can be written as a sum of positive squares in 2 ways, for example, as 151240804 + 1072169536 = 12298^2 + 32744^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 61170517 = 1223410340 / (1 + 2 + 2 + 3 + 4 + 1 + 0 + 3 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (1223410343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30585239 + ... + 30585278.

It is an arithmetic number, because the mean of its divisors is an integer number (214096813).

Almost surely, 2^1223410340 is an apocalyptic number.

1223410340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223410340 is an abundant number, since it is smaller than the sum of its proper divisors (1345751416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223410340 is a wasteful number, since it uses less digits than its factorization.

1223410340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61170526 (or 61170524 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1223410340 is about 34977.2831992423. The cubic root of 1223410340 is about 1069.5244458498.

Adding to 1223410340 its reverse (430143221), we get a palindrome (1653553561).

The spelling of 1223410340 in words is "one billion, two hundred twenty-three million, four hundred ten thousand, three hundred forty".